Hoisting apparatus.



Patenlted lan. I6, |900.

H. C. BEHR. HISTING APPARATUS.

(Application tiled Jan. 26, 1899.)

(No Model.)

- INVETOR l AltafLney lVT/VESSES 1m: Noam: mens cn, Puofouma.. wnsnwaomn, c.

IIANS C. BEI'IR, OF SAN FRANCISCO, CALIFORNIA.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 641,362, dated January16, 1900.

Application leflJanuary 26, 1899. Serial No. 703.440. (No model.)

To all whom it may concern:

Be it known that I, HANS C. BEHR, a citizen of the United States,residing in the city and county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements inHoisting Apparatus; and I do hereby declare that the following isa full,clear, and exact description thereof.

This invention relates to certain new and useful improvements inhoisting machinery designed more especially for use in connec tion withthe working of mines; and it consists in the arrangement of parts anddetails of construction, as will be hereinafter fully set forth in thedrawings and described and pointed out in the specification.

The object of the invention is to economize in space for the working ofthe 'clutch mechanisms and in so arranging or constructing thewinding-drums as to permit of the use of a comparatively short power ordrive shaft, thus creating a considerable saving in the cost of erectingsaid hoisting machinery. This is attained by so arranging that theclutch mechanisms may be located and operated inside of the hoisting o'rwinding drums and that the drive or power shaft shall serve as a bearingfor one end of each drum.

Ordinarily the power or drive shaft extends entirely through 'thehoisting or winding drums, which adds considerably to the cost of thisclass of machinery where the drums are of considerable width, as isrequired for deep hoisting, and the clutch mechanisms by means of whichthe drums are thrown in or out of operation are arranged outside of thedrums. It is this arrangement of the clutch mechanisms and length of thedrive-shaft which I propose to overcome by the present invention.

For a comprehensive understanding of the invention reference must be hadto the accompanying sheet of drawings, which forms a portion of thisapplication, wherein- Figure l is a top plan View, partly broken, of adouble hoist system, one of the hoisting or winding drums being shown insection. Fig. 2 is a cross-sectional view in end elevation, taken online m w, Fig. l; and Fig. 3 is a cross-sectional top plan View of oneof the frictional clutch-arms, taken on line y y, Fig. 2.

In the drawings the letters A A' are used ldrums A A, Fig. l.

with the inner face of said drums.

to indicate the hoisting or winding drums, which in the present case arelooselymounted upon the ends of a crank power or drive shaft A2 arrangedtherebetween. This shaft works in bearings B of the engine-frame B', andeach end of said shaft projects a slight distance beyond the end or headB2 of the Vsithin each hollow drum is located a double-arm driver C of afriction-clutch, which drivers are rigidly secured to each projectingend of the power or drive shaft A2 by means of the keys or feathers d.Any suitable style of clutch mechanism may be employed, although Iprefer to use what is known as a friction-clutch and have illustratedone of the simplest forms of this class of clutches. In the outerendportion of each clutch-arm a guideway ct' is formed, within which worksthe downward extension of the friction-clutch jaws orshoes C', which arearranged to be forced out radially into frictional contact with anannular face C2 on the interiorof thehoistingorwindingdrums. The outerend of each hoisting or winding drum is supported by means of a hollowtrunnion D, outwardly projecting from the removable head D, bolted orotherwise secured to the drums proper. These trunnions D work inbearings D2 and serve as suitable supports for holding the drums inproper alinement with the power or drive shaft A2. If so desired,instead of trunnions short hollow stationary shafts upon which the drumsare free to revolve may be employed for this purpose. Through thesehollow trunnions and into the hollow hoisting or winding drums extendthe longitudinally-movable rods D3, each rod at its inner endterminating in a suitable head h', which is attached or connected to theclutch jaws or shoes C by means of the toggles E. As the rods D3 aremoved inward or outward within the drums the clutch jaws or shoes arethrown into or out of frictional engagement Inasmuch as the clutchmechanisms are secured to and revolve with the power or drive shaft, therods D5 through their connections are carried therewith. Hence it isnecessary that the outer end of each rod be free to rotate. For thisreason the outer end of each rod is swiveled in a yoke E', which yoke ispivoted to the upper end of levers E2, fulcrumed to links roo4 E3,attached at one end to fixed brackets d. The opposite or lower end ofeach fulcrumed lever is attached to an operating-lever F by means of aconnecting-rod F', said operatinglevers being fulcrumed to brackets F2,so as to be within convenient reach of the operator.

Inasmuch as the mechanism for placing the winding or hoisting drums inor out of work is the same in each instance, I have deemed it onlynecessary to illustrate and describe the means by which one of theclutches is operated.

Connection is made in the present case between the power or drive shaftA2 and the engine-pistons F3 by means of the connectingrods G, althoughany suitable form of connection or operating mechanism may be made useof-as, for instance, watermotors.

By the foregoing arrangement of the hoisting or winding mechanism it isonly required that the power or drive shaft be of such length as to formconnection between the inner ends of the hoisting or winding drums,hence enabling a comparatively short shaft to be made use of.

The brake mechanism which engages the brake G of each drum is notillustrated in the drawings, as any well-known mechanism may be employedfor`this purpose. y

The operation of placing the clutch jaws or shoes in or out of'engagement with the winding or hoisting drums, so as to. transmitmotion of the power or drive shaft thereto,is accomplished by means ofthe operating-lever through the medium of its connecting mechanism. Thiswill be readily understood by reference to the drawings withoutdetaildescription as to the movement of the various parts.

By arranging the parts as before described I am enabled to use acomparatively short drive or power shaft for operating long drums, andby the location of the clutch mechanisms inside of the hoisting orwinding drums create a saving of space and secure compactness, while byinserting the driving power between the hoisting or winding drums morefavorable action is obtained than where the engines or motor power islocated at each end of a shaft, thus dispensing with the longintermediate connections required in such cases.

Having thus described my invention, what I claim as new, and desire tosecure protection in by Letters Patent, is-

l. The combination with a hollow hoist or winding drum, of a drive orpower shaft extending into one end thereof and upon which the drum isloosely mounted, an independent support for the opposite end of thedrum, clutch mechanism secured to and carried by the drive or powershaft, said mechanism being located within the drum, andindependentlyoperated connected devices for throwing the clutchmechanism in or outof engagement with the drum.

2. The combination with the drive or power shaft, of the winding` orhoist drums loosely mounted upon each end thereof, an independentsupport for the outer end of each drum, clutch mechanism secured to andcarried by each end of the drive or power shaft, said clutch mechanismsbeing located within the drums, and independently-operated mechanismsfor throwing the clutch mechanisms into orout of engagement with thehoist or winding drums.

3. The combination with the drive or power shaft, of the hollow hoist orwinding drums arranged at each end thereof, clutch mechanism locatedwithin each hollow drum, and independently-operated connected devicesfor throwing the clutch mechanism in or out of engagement with therespective drums.

In testimony whereof I hereunto affix my signature, in presence of twowitnesses, this 21st day of January, 1899.

IIANS C. BEIIR.

Witnesses:

N. A. AcKEn, XVALTER F. VANE.

